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Health Services Administration (DHEW/PHS), Rockville, MD. – 1976
The report presents information on intellectual development and school achievement of youths in relation to selected socioeconomic and demographic factors. Estimates were based on data collected by the National Center for Health Statistics from 1966-70. The survey sample consisted of 6,768 adolescents aged 12-17 years. Measurement instruments were…
Descriptors: Academic Achievement, Achievement Tests, Arithmetic, Data Analysis